The text object horizontal and vertical alignment settings have no effect in the application runtime. It always appears as left and top.
Repro:
File > New Application.
Add a text object.
Set its horizontal alignment to center, and vertical alignment to right. Resize it so you can notice the differences easily.
Preview the app.
The text appears left and top aligned, no matter what I have set it to.
I tried this in 0.99.7, but on the forum, KrushBrother said something about it happening with 0.99.62. ( http://www.scirra.com/forum/viewtopic.php?f=2&t=5279&p=41871 ) Not sure, at the moment, if it only applies to the app runtime for him.
This does not seem to be a problem (for me) in the DirectX runtime.
In the forum thread, KrushBrother said he "exporting as an application runtime, rather than DirectX."